The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography
The Code Book is amazing. Singh does an amazin job of making the story of cryptography interesting while explaining the increasingly complex concepts behind the developing codes. By the time I finished this book, I understood how to do those "Decode-A-Quote" puzzles on the comics pages of some newspapers (which had never made complete sense before), had a budding interest in (and high-level understanding of) quantum computing, and the chance to recommend the book to everyone I know.
